extinction

英 [ɪkˈstɪŋkʃn]

美 [ɪkˈstɪŋkʃn]

n.  (植物、动物、生活方式等的)灭绝，绝种，消亡

复数：extinctions　

CET6TOEFLGREIELTSTEM8化学

BNC.7889 / COCA.6977

牛津词典

noun

• （植物、动物、生活方式等的）灭绝，绝种，消亡
  a situation in which a plant, an animal, a way of life, etc. stops existing
  1. a tribe threatened with extinction/in danger of extinction
     面临消亡威胁 / 有消亡危险的部落
  2. The mountain gorilla is on the verge of extinction .
     居住在山区的大猩猩已濒临灭绝。

柯林斯词典

• N-UNCOUNT （物种的）灭绝
  Theextinctionof a species of animal or plant is the death of all its remaining living members.
  1. An operation is beginning to try to save a species of crocodile from extinction...
     一项努力拯救一个鳄鱼物种、使其免于灭绝的行动已经开始。
  2. Many species have been shot to the verge of extinction.
     很多物种已经被猎杀到灭绝的边缘。
• N-UNCOUNT 消亡;消灭;不复存在
  If someone refers to theextinctionof a way of life or type of activity, they mean that the way of life or activity stops existing.
  1. The loggers say their jobs are faced with extinction because of declining timber sales.
     伐木工人说由于木材销量下降，他们的工作恐不复存在。

英英释义

noun

• the act of extinguishing
  1. the extinction of the lights
  Synonym:extinguishingquenching
• a conditioning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus
  Synonym:experimental extinction
• complete annihilation
  1. they think a meteor cause the extinction of the dinosaurs
  Synonym:extermination
• the reduction of the intensity of radiation as a consequence of absorption and radiation
• no longer in existence
  1. the extinction of a species
  Synonym:defunctness
• no longer active
  1. the extinction of the volcano

双语例句

• This marks precisely to within a few thousand years the point of mass extinction on the land.
  这明确标志着正是在这几千年中，发生了陆地上的大规模灭绝。
• Many species have been shot to the verge of extinction.
  很多物种已经被猎杀到灭绝的边缘。
• The centuries-old ritual seems headed for extinction.
  延续了几个世纪的仪式似乎要面临消亡。
• The mass extinction is the greatest environmental threat that human is facing.
  物种大灭绝和不可恢复性是人类面临的最大环境威胁。
• An operation is beginning to try to save a species of crocodile from extinction
  一项努力拯救一个鳄鱼物种、使其免于灭绝的行动已经开始。
• Current extinction rate projections may be overestimating the role of habitat loss on species, a study suggest.
  一项研究显示，现有物种灭绝速率预测可能高估了栖息地缺失对物种的影响。
• Polar bears, desert gazelles and sharks were all added to the list of species facing extinction.
  北极熊、漠瞪羚和鲨鱼都已经被列入濒临灭绝的物种。
• I have help getting protection now, because I was near extinction.
  现在我受到了保护，因为我正濒临灭绝。
• In this paper, a technology on generation of ultrashort pulse with high extinction ratio is studied.
  实验研究了一种高消光比短脉冲的产生技术。
• Two endangered species of wading bird face extinction because of the changes.
  由于这些变化，涉水鸟的两个濒危种类面临着灭绝。